CN1483055A - Method of manufacturing polycarbonates - Google Patents
Method of manufacturing polycarbonates Download PDFInfo
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- CN1483055A CN1483055A CNA018215327A CN01821532A CN1483055A CN 1483055 A CN1483055 A CN 1483055A CN A018215327 A CNA018215327 A CN A018215327A CN 01821532 A CN01821532 A CN 01821532A CN 1483055 A CN1483055 A CN 1483055A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
- C08G64/04—Aromatic polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
- C08G64/04—Aromatic polycarbonates
- C08G64/06—Aromatic polycarbonates not containing aliphatic unsaturation
- C08G64/14—Aromatic polycarbonates not containing aliphatic unsaturation containing a chain-terminating or -crosslinking agent
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
- C08G64/20—General preparatory processes
- C08G64/30—General preparatory processes using carbonates
- C08G64/307—General preparatory processes using carbonates and phenols
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Abstract
A process for the production of polycarbonate having increased end-cap levels and controlled molecular weight build-up, the process comprising adding a terminal blocking agent of the formula: Formula (I), wherein R1 is a methoxy, ethoxy, propoxy, butoxy, phenyl, phenoxy, benzyl or benzoxy; and R2 is a C1-C30 alkyl group, C1-C30 alkoxy group, C6-C30 aryl group, C6-C30 aryloxy group, C7-C30 alkyl, or C6-C30 arylalkyloxy group.
Description
The reference of related application
The application requires the right of priority of the U.S. provisional application sequence number 60/258,708 of proposition on December 28th, 2000, and this application is introduced for reference here in full.
Invention field
The present invention relates to produce the method for polycarbonate.More particularly, the present invention relates to prepare that its end phenolic hydroxyl group is closed or the method for end capped polycarbonate, and control the method that the molecular weight of this polycarbonate increases.
Background of invention
Polycarbonate is the thermoplastics with excellent mechanical property (for example impact-resistance), thermotolerance and transparency.Polycarbonate is widely used in many engineerings and uses.In some application, in large-scale sheet material, wish to use polycarbonate resin with high molecular, high inherent viscosity and low end-blocking level.For other application,, wish to use polycarbonate with relative lower molecular weight, low limiting viscosity and higher end-blocking level as CD.
In a kind of typical method of producing polycarbonate, aromatic dihydroxy compound such as bis-phenol and diaryl carbonate such as diphenyl carbonate reaction.This transesterification reaction is preferably carried out under molten state, and is referred to as melt-polycondensation method.Known use end encapsulant or " end-capping reagent " improve the ratio (being end-blocking) of the end phenolic hydroxyl group that is connected in monofunctional reagent.
Do not examine Japanese patent application H6-157739 and disclose some carbonic ether and ester, especially diphenyl carbonate is as the purposes of end-capping reagent.
U.S. patent No.5,696,222 and EP patent No.0 985 696 A1 disclose by adding the method that some activated carbonate end-capping reagent is produced the polycarbonate with high end-blocking level.These end-capping reagents are by having adjacent chlorine atom, and the phenolic group of O-methoxy carbonyl or adjacent ethoxy carbonyl activates.Should be noted that the use of the end-capping reagent of chlorine activation has caused the genotoxic potential by product, or when burning, form the generation of the by product of the product that contains gas chlorine.Like this, from handling and the environment viewpoint, has demand for the use of the end-capping reagent of chloride activating group not.These patents also disclose after formed polycarbonate has the limiting viscosity of 0.3dl/g at least end-capping reagent have been joined in the technology, the end-blocking level that has increase with formation, molecular weight or viscosity have minimum change, promptly than the polycarbonate in the limiting viscosity of the high or low 0.1dl/g at the most of viscosity that adds the polycarbonate that forms before the end-capping reagent.Should be noted that, wishing can be at some polycarbonate resin, for example under the situation of high molecular or limiting viscosity sheet polycarbonate, or in some reactor assemblies (for example continuous or semicontinuous type), increase end-blocking level and molecular weight or limiting viscosity simultaneously.
EP 0 980 861A1 disclose some salicylic acid ester derivative with 0.1-10 doubly and most preferably the amount of the end hydroxyl of the 0.5-2 times of normal polycarbonate that when adding, forms of mol/mol as the purposes of end encapsulant.These polycarbonate have the good tone that is suitable for the optical material purposes.It discloses these end-capping reagents and has activated by the phenolic group with O-methoxy carbonyl or ethoxy carbonyl.Should be noted that EP 0 980 861 A1 have instructed 2-methoxycarbonyl phenyl-benzol carbonate with the amount of the normal end of the about 1mol/mol hydroxyl purposes as end-capping reagent, formed and have the polycarbonate that increases the end-blocking level.
The improvement melt process that has the polycarbonate of closed end and control molecular weight for production still exists demand.
Summary of the invention
The present invention relates to produce the method for polycarbonate, this method comprises the end encapsulant that adds structural formula (1):
Wherein after polycarbonate oligomer has reached about 2,000 to 15,000 daltonian number-average molecular weights, the end encapsulant joined in the oligopolymer with the stoichiometric quantity with respect to about 0.1-6.5 of the free OH content of polycarbonate oligomer and
Wherein said polycarbonate oligomer has than the end-blocking level in final response viscosity of adding the high or low 0.1dl/g at least of polycarbonate that forms before the encapsulant of end and increase by 20% at least.
In one embodiment of the invention, R
1Be selected from methoxyl group, propoxy-, benzyloxy and phenoxy group, and R
2Be selected from phenyl, to tert-butyl-phenyl, phenoxy group, to tertiary butyl phenoxy group, to Nonylphenoxy, to dodecyl phenoxy group, 3-(Pentadecane base)-phenoxy group with to the cumyl phenoxy group.
Detailed Description Of The Invention
In the method for the invention, the applicant is surprisingly found out that, by end-capping reagent of the present invention or the end encapsulant (annotate: these terms are using in the specification sheets in the whole text simultaneously) that adds relatively small amount, the end OH group of quick end-blocking of this end-capping reagent or sealing melt polycarbonate is so that make the molecular weight controlled propagation of polycarbonate oligomer.The applicant has been found that by controlling the stoichiometry of end-capping reagent of the present invention, can control molecular weight and increase in the production of polycarbonate.
End-capping reagent/MW growing agent: in the method for the invention, with the compound of following structural formula as end-capping reagent or the end encapsulant joins in the polycarbonate oligomer and the molecular weight of control polycarbonate oligomer:
In one embodiment, R
2Be selected from phenyl, to tert-butyl-phenyl, phenoxy group, to tertiary butyl phenoxy group, to Nonylphenoxy, 3-(Pentadecane base) phenoxy group with to the cumyl phenoxy group.
In the 3rd embodiment of the present invention, end-capping reagent is selected from the group that obtains higher melt: ortho position substituted phenol such as Whitfield's ointment benzyl or phenylester (fusing point " mp " is respectively 24 ℃ and 44-46 ℃) or 2-dihydroxy benaophenonel (mp=37-39 ℃).
The preparation of end-capping reagentIn one embodiment of the invention, end-capping reagent is by the suitable chloro-formic ester (for example phenyl chloroformate or chloroformic acid are to the cumyl phenyl ester) and the activation phenol of monovalent, reacts in solvent such as methylene dichloride as propyl salicylate to prepare in the presence of the alkali of the HCl that neutralization is discharged.In this reaction, can also use other catalyzer, to help condensation reaction.After condensation reaction was finished, product solution washed with water, till washings is neutrality then with aqueous acids, neutralizing treatment.Organic solvent can remove by distillation, and the crystallizable or distillation of end-capping reagent is reclaimed again.
The condensation reaction for preparing end-capping reagent of the present invention can use one or how normal tertiary amine/normal chloro-formic ester as alkali under anhydrous condition known in the art, or to use the aqueous sodium hydroxide solution as alkali in the presence of condensation catalyst also be to carry out under the boundary condition as known in the art.In one embodiment, condensation catalyst is a triethylamine, season alkylammonium salt, or their mixture.
End capping in method for producing polycarbonate: end of the present invention encapsulant be used for quick end-blocking or sealing polycarbonate the end hydroxyl (OH), with the end of sealing polycarbonate as follows:
It is lower than the phenol reactant in the backbiting reaction that the ortho position substituted phenol that produces in the reaction of reaction formula shown in above is considered to, and this has caused the molecular weight of polycarbonate to reduce.The by product phenols uses appliance common (promptly using the freezing trap of quenched water as refrigerant) to be removed in the headspace system by distillation, and they can be condensed and solidify there, so that accelerate the end sealing with high yield.
In one embodiment, from headspace system, remove ortho position substituted phenol by product, and be reused for new end-capping reagent of preparation or terminator.
The melt polycarbonate methodMethod of the present invention is melt or ester exchange method.Polycarbonate is known with the production method of transesterify in the art, for example is described in OrganicPolymer Chemistry by K.J.Saunders, 1973, Champman and HallLtd. and in many U.S. patents, comprise U.S. patent Nos.3,442,854; 5,026,817; 5,097,002; 5,142,018; In 5,151,491 and 5,340,905.
In melt process, polycarbonate is produced by the melt polycondensation of aromatic dihydroxy compound (A) and carbonic diester (B).Reaction can be carried out with intermittent mode or continuous mode.The device that reacts can be jar, pipe or the tower of any suitable type.Continuation method is usually directed to use one or more CSTR and one or more finishing reactor.
The example of aromatic dihydroxy compound (A) comprises two (hydroxyaryl) paraffinic hydrocarbonss such as two (4-hydroxyphenyl) methane; 1, two (4-hydroxyphenyl) ethane of 1-; 2, two (4-hydroxyphenyl) propane (also being referred to as dihydroxyphenyl propane) of 2-; 2, two (4-hydroxyphenyl) butane of 2-; 2, two (4-hydroxyphenyl) octanes of 2-; Two (4-hydroxyphenyl) phenylmethane; 2, two (4-hydroxyl-1-aminomethyl phenyl) propane of 2-; 1, two (4-hydroxyl-tert-butyl-phenyl) propane of 1-; With 2, two (4-hydroxyl-3-bromophenyl) propane of 2-; Two (hydroxyaryl) naphthenic hydrocarbon is as 1,1-(4-hydroxyphenyl) pentamethylene and 1, two (4-hydroxyphenyl) hexanaphthenes of 1-; The dihydroxyl aryl ethers is as 4,4 '-dihydroxydiphenyl ether and 4,4 '-dihydroxyl-3,3 '-3,5-dimethylphenyl ether; Dihydroxyl diaryl sulphur is as 4,4 '-dihydroxyl diphenyl sulfide and 4,4 '-dihydroxyl-3,3 '-dimethyl diphenyl sulfide; The dihydroxyl diaryl sulphoxide is as 4,4 '-dihydroxyl diphenyl sulfoxide and 4,4 '-dihydroxyl-3,3 '-dimethyl diphenyl sulfoxide; With dihydroxyl diaryl sulfone as 4,4 '-dihydroxy-diphenyl sulfone and 4,4 '-dihydroxyl-3,3 '-dimethyl diphenyl sulfone.In one embodiment, aromatic dihydroxy compound is dihydroxyphenyl propane (BPA).
The example of carbonic diester (B) comprises diphenyl carbonate; The carboxylol ester; Two (chloro-phenyl-) carbonic ether; Meta-cresol base carbonic ether; Carbonic acid dinaphthyl ester; Two (phenylbenzene) esters of carbonic acid; Diethyl carbonate; Methylcarbonate; Dibutyl carbonate; With carbonic acid dicyclohexyl ester.In an embodiment of commercial run, use diphenyl carbonate (DPC).
In one embodiment of the invention, end of the present invention encapsulant adds with DPC or other diaryl carbonate.
The carbonic diester component can also contain on a small quantity, and for example approximately dicarboxylic acid or its ester of 50mol% at the most are as terephthalic acid or diphenylisophthalate, with the preparation polyester-polycarbonate.
In the preparation polycarbonate, the aromatic dihydroxy compound of every 1mol uses the carbonic diester of usually about 1.0mol to about 1.30mol.In one embodiment, use the carbonic diester of about 1.01mol to about 1.20mol.
Optional terminator/end-capping reagent: in an embodiment of melt process, can also use prior art other/optional terminator or end-capping reagent.The example of terminator comprises phenol, p-tert-butylphenol, and to cumylphenol, octyl phenol, nonyl phenol and other end-capping reagent as known in the art.
Optional branching agent: in an embodiment of the inventive method, use branching agent as required.Branching agent is known, can comprise the multiple functionalized organic compound that contains at least three functional groups, and they can be hydroxyls, carboxyl, carboxylic acid anhydride and their mixture.Specific examples comprises 1,2,4-benzenetricarboxylic acid, 1,2,4-benzenetricarboxylic anhydride, 1,2,4-benzene three formyl chlorides, three-p-hydroxybenzene ethane, isatin-bis-phenol, three-phenol TC (1,3,5-three (p-hydroxybenzene) sec.-propyl) benzene), triphenol PA (4 (4 (1, two (the p-hydroxybenzene)-ethyls of 1-) α, α-Er Jiajibianji) phenol), 1,3,5-benzenetricarboxylic acid and benzophenone tetracarboxylic acid.
Optional coupling agent: in an embodiment of the inventive method; the two alkylated salicylamide base esters of coupling agent such as carbonic acid; the for example two methyl of carbonic acid or ethyl or propyl group salicyl ester; two phenyl of carbonic acid or benzyl salicyl ester; two (the 2-benzoyl phenyl) esters of carbonic acid; carbonic acid BPA-pair-2-alkoxyl phenyl ester; carbonic acid BPA-pair-2-aryloxy phenylester; or carbonic acid BPA-two-2-benzoyl phenyl ester unites use with end-capping reagent, with faster and/or higher the increasing of acquisition polycarbonate oligomer molecular weight.
Optional catalyzer: polycarbonate is synthetic can to carry out in the presence of catalyzer, to promote transesterification reaction.Example comprises basic metal and alkaline-earth metal itself, or their oxide compound, oxyhydroxide, amides, alkoxide and phenates, alkalimetal oxide such as ZnO, PbO and Sb
2O
3The acetate of organic titanic compound, soluble manganese compound, nitrogenous basic cpd and calcium, magnesium, zinc, lead, tin, manganese, cadmium and cobalt, and compound catalyst system such as nitrogenous basic cpd and boron compound, nitrogenous basic cpd and basic metal (alkaline-earth metal) compound, and nitrogenous basic cpd, basic metal (alkaline-earth metal) compound and boron compound.
In one embodiment of the invention, transesterification catalyst is a quaternary ammonium compound Huo quaternary phosphonium compound.The limiting examples of these compounds comprises tetramethyl ammonium hydroxide, acetate tetramethyl-ammonium, fluoridizes tetramethyl-ammonium, tetraphenyl boric acid tetramethyl-ammonium, fluoridize tetraphenylphosphoniphenolate, tetraphenyl boric acid tetraphenylphosphoniphenolate, hydroxide 4-butyl-phosphonium, acetate 4-butyl-phosphonium and hydroxide dimethyl diphenyl ammonium.
Above-mentioned catalyzer can itself use separately, or depends on desired use, can unite use with two classes or multiclass.When using more than one catalyzer, can be incorporated in the melt separately in the differential responses section.In one embodiment of the invention, part or all of a kind of catalyzer uses with end-capping reagent.
The catalyst member of proper level depends on and uses how many catalyzer, for example one or both.Generally, the catalyzer of total amount normally about 1 * 10
-8In the scope of the dihydroxy compound of dihydroxy compound/mol of about 1.0mol/mol.In one embodiment, this level is about 1 * 10
-5To about 5 * 10
-2In the scope of the dihydroxy compound of mol/mol.When using more than one catalyzer, can be incorporated in the melt in the different steps of reaction separately.
The component that in polycarbonate other is optionalIn the present invention, the gained polycarbonate can further contain at least a in commonly used thermo-stabilizer, UV light absorber, releasing agent, tinting material, static inhibitor, lubricant, antifogging agent, natural oil, synthetic oil, wax, organic filler and the mineral filler in this area.
The end encapsulant is joined in the melt processThe method that end-capping reagent of the present invention is joined in the polycarbonate is not special the restriction.For example, end-capping reagent can be joined in the polycarbonate in batch reactor or the flow reactor system as reaction product.In one embodiment, end-capping reagent is joined the just back reactor in the flow reactor system, promptly in the melt polycarbonate before the polymerizer.In second embodiment, end-capping reagent in the flow reactor system second reactor and first polymerizer between add.In another embodiment, it is to add between first and second polymerizers in the flow reactor system.
The end encapsulant is to add with respect to the stoichiometric calculation ratio between about 0.1-6.5 of the free OH content of the polycarbonate oligomer that adds it.In one embodiment, it adds with the ratio of about 0.2-0.7.In another embodiment, it adds with the ratio of about 0.4-0.7.In the 3rd embodiment, it adds with the ratio with respect to the 0.8-1.5 of the free OH that obtains in the polycarbonate of ultimate aim molecular weight and does not use other end-capping reagent.
In one embodiment of the invention, when when adding before the polymeric segment or in polymeric segment or before forcing machine, end-capping reagent lowers agent as molecular weight, so that reduce the ultimate aim molecular weight of polycarbonate, and can not lower the free OH level of end-blocking level or increase polycarbonate product.In another embodiment, molecular weight lowers agent and adds with the stoichiometric ratio between about 2 and 6.5, with respect to the free OH content of the polycarbonate oligomer that it added.In the 3rd embodiment, it adds with the ratio of about 3-6.
Device/the method that is used for the feeding end-capping reagent is not special restriction.End-capping reagent can their form of solid, liquid, melt or solution add.In addition, end-capping reagent can once add by predetermined amount, or it can be divided into several predetermined amounts and divide interpolation several times.In one embodiment, it joins in this method with static mixer.
Embodiment is following to explain the present invention with reference to embodiment, but the present invention is wideer than scope of embodiments, and the restriction that is not subjected to these embodiment.In an embodiment, carry out following measurement.
A) molecular weight: the gpc analysis of the relative polystyrene standard of dichloromethane solution of the polymkeric substance by 1mg/ml is measured Mw and Mn.
B) pass through by polymkeric substance and TiCl
4The UV/ visible spectrometry of title complex in dichloromethane solution that forms measured free OH content.In some cases, measure free OH content by direct UV method.
C) the end-blocking level is calculated by free OH content and Mn value.
D) limiting viscosity (IV) uses following experience mensuration relational expression to calculate: and IV=(A * Mn)+B, wherein A=5 * 10
-5, B=-0.0179.
The starting raw material polycarbonate uses following A or the initial polycarbonate of B level in certain embodiments.Starting raw material prepares by the melt process in the flow reactor system, has following performance:
| Polycarbonate A | Polycarbonate B | Polycarbonate C | |
| Weight-average molecular weight Mw: | ????8.11×10 3g/mol | ????18.3×10 3g/mol | ????22.9×10 3g/mol |
| Number-average molecular weight Mn: | ????4.05×10 3g/mol | ????8.34×10 3g/mol | ????10.1×10 3g/mol |
| Free OH content: | ????4020ppm | ????670ppm | ????1016ppm |
| The end-blocking ratio: | ????52.1％ | ????83.6％ | ????69.8％ |
| Residue: | ????100ppm | ????100ppm | ????100ppm |
| Initial intrinsic viscosity IV: | ????0.185dl/g | ????0.358dl/g | ????0.487dl/g |
Embodiment 1-3: in embodiment 1-3, in the rhythmic reaction pipe, under nitrogen, be added in the initial polycarbonate of the difference amount between the 25-50g and at 0.1952g (5.0 * 10
-4Mol or 0.085mol end-capping reagent/mol-the OH group) to 0.5856g (1.5 * 10
-3Mol or 0.254mol end-capping reagent/mol-the OH group) between following formula end-capping reagent carbonic acid methyl salicyl to cumyl phenylester (MSpCPC):
With the temperature of mixture heating up to 300 ℃ with stirred 20 minutes.After stage, apply vacuum in melt-mixing, to reach 0.5 millibar pressure, reaction continuation 60 minutes in this system.After step of reaction, from reaction tubes, extract the sample of polymkeric substance, so that measure number average and weight-average molecular weight.The result provides in table 1.
Embodiment 4-7: condition identical with embodiment 1-4 (2.794 * 10
-3The end-capping reagent of mol or 0.236mol end-capping reagent/mol-the OH group), be: the carbonic acid benzyl salicyl phenylester (BSPC) that a) uses following structural formula respectively, carbonic acid phenyl salicyl phenylester (PSPC), carbonic acid methyl salicyl phenylester (MSPC), with the end-capping reagent of carbonic acid n-propyl salicyl phenylester (PrSPC) as embodiment 5,6 and 7, and b) be reflected under the vacuum and continue 20 minutes, rather than 60 minutes.The result also provides in table 1.
The comparative example 1: repeat embodiment 1, the reaction times is 60 minutes, does not just use end-capping reagent.The result provides in table 1.
The comparative example 2: repeat embodiment 4, the reaction times is 20 minutes, does not just use end-capping reagent.The result is also providing in the table 1.
Embodiment 8: use 50g polycarbonate B as starting raw material and 0.3753g (1.250 * 10
-3Mol) carbonic acid n-propyl salicyl phenylester is as the NaOH (aq) (10 * 5 * 10 of end-capping reagent and additional catalyst 100 μ l
-7Mol NaOH/mol BPA) repeat embodiment 1 together, the reaction times is 60 minutes.
The comparative example 3: repeat embodiment 8, just do not use end-capping reagent.
Embodiment 9-10: with 25g polycarbonate C as starting raw material and 1.25 and 2.50g (4.59 * 10
-3With 9.18 * 10
-3Mol) carbonic acid methyl salicyl phenylester repeats embodiment 1 as end-capping reagent, and the reaction times is 10 minutes.The result also provides in table 1.
The comparative example 4: repeat embodiment 9, just 0.448g (1.65 * 10
-3Mol) carbonic acid methyl salicyl phenylester is respectively applied for embodiment 9 and 10.The result also provides in table 1.
The comparative example 5: repeat embodiment 9, just do not use end-capping reagent.The result also provides in table 1.
Embodiment 11-12: in these two embodiment, use continuous reaction system.This device stirs polymerization tank by prepolymerization jar and level and forms.1.08: 1 dihydroxyphenyl propane of mol ratio and diphenyl carbonate are supplied with in the heating and stirring tank continuously, produced uniform solution there.With about 250eq (2.5 * 10
-4The mol/mol dihydroxyphenyl propane) tetramethyl ammonium hydroxide and 1eq (1.10
-6The mol/mol dihydroxyphenyl propane) NaOH joins in the solution as catalyzer.Then solution is supplied with continuously the prepolymerization jar and the level of arranging successively and stirred polymerization tank, and polycondensation is proceeded, to obtain to have the Mw of 8759 ± 199g/mol and the Mn of 4710+106g/mol, about 50% end-blocking level, and the starting polymer that is used for embodiment 9-10 " C " of the limiting viscosity IV of about 0.218dl/g.
For embodiment 11, with amount carbonic acid methyl salicyl phenylester (MSPC) is joined in the molten polymer outlet materials flow (level stirs the import materials flow of polymerization tank) of prepolymerization jar with respect to 1.95 quality % of melt polymerization streams with the heating static mixer.In embodiment 12, end-capping reagent is with the carbonic acid n-propyl salicyl phenylester with respect to the amount charging of about 2.15 quality % of melt polymerization streams.
The comparative example 6: repeat embodiment 11, just do not use end-capping reagent.
Table 1
| Embodiment | Starting raw material | Employed encapsulant | Amount mole/-OH | Reaction times min | ?Mw ?g/mole | ?Mn ?g/mole | Final IV δ IV (dl/g) | Free OH ppm | End-blocking % |
| Comp.1 | ?A | - | - | ?60 | ?3.03?E+04 | ?1.29?E+05 | ?0.625 ?0.440 | ?370 | ?86.0 |
| 1 | ?A | The carbonic acid methyl salicyl is to cumyl phenylester (MSpCPC) | 0.085 | ?60 | ?3.03?E+04 | ?1.29?E+04 | ?0.625 ?0.440 | ?224 | ?91.5 |
| 2 | ?A | The carbonic acid methyl salicyl is to cumyl phenylester (MSpCPC) | 0.169 | ?60 | ?2.57?E+04 | ?1.11?E+04 | ?0.539 ?0.354 | ?216 | ?92.9 |
| 3 | ?A | Base ester carbonic acid methyl salicyl is to cumyl benzene (MSpCPC) | 0.254 | ?60 | ?2.40?E+04 | ?1.06?E+04 | ?0.512 ?0.327 | ?118 | ?96.3 |
| Comp.2 | ?A | - | - | ?20 | ?1.79?E+04 | ?8.17?E+03 | ?0.341 ?0.206 | ?1003 | ?75.9 |
| 4 | ?A | Carbonic acid benzyl salicyl phenylester (BSPC) | 0.236 | ?20 | ?1.71?E+04 | ?8.17?E+03 | ?0.369 ?0.184 | ?619 | ?85.9 |
| 5 | ?A | Carbonic acid phenyl salicyl phenylester (PSPC) | 0.236 | ?20 | ?1.55?E+04 | ?7.00?E+03 | ?0.332 ?0.147 | ?724 | ?85.1 |
| 6 | ?A | Carbonic acid methyl salicyl phenylester (MSPC) | 0.236 | ?20 | ?1.76?E+04 | ?8.02?E+03 | ?0.383 ?0.198 | ?562 | ?86.7 |
| 7 | ?A | Carbonic acid n-propyl salicyl phenylester (PrSPC) | 0.236 | ?20 | ?1.68?E+04 | ?7.71?E+03 | ?0.367 ?0.183 | ?682 | ?84.5 |
| 8 | ?B | Carbonic acid n-propyl salicyl phenylester (PrSPC) | 0.61 | ?60 | ?2.80?E+04 | ?1.19?E+04 | ?0.579 ?0.221 | ?178 | ?93.7 |
| Comp.3 | ?B | - | - | ?60 | ?3.14E+04 | ?1.53?E+04 | ?0.745 ?0.387 | ?321 | ?85.6 |
| 9 | ?C | Carbonic acid methyl salicyl phenylester (MSPC) | 3.06 | ?10 | ?1.37?E+04 | ?6.46?E+03 | ?0.305 ?-0.181 | ?340 | ?93.5 |
| 10 | ?C | Carbonic acid methyl salicyl phenylester (MSPC) | 6.14 | ?10 | ?8.14?E+03 | ?3.89?E+03 | ?0.177 ?-0.310 | ?913 | ?89.5 |
| Comp.4 | ?C | Carbonic acid methyl salicyl phenylester (MSPC) | 1.1 | ?10 | ?1.84?E+04 | ?8.34?E+03 | ?0.398 ?-0.088 | ?668 | ?83.6 |
| Comp.5 | ?C | - | - | ?10 | ?2.33?E+04 | ?1.02?E+04 | ?0.494 ?0.072 | ?1094 | ?67.0 |
| 11 | ?D | Carbonic acid methyl salicyl phenylester (MSPC) | - | ?- | ?1.81?E+04 | ?8.21?E+03 | ?0.393 | ?885 | ?80 |
| ??0.175 | |||||||||
| ?12 | ?D | Carbonic acid n-propyl salicyl phenylester (PrSPC) | - | - | ??1.75?E+04 | ??7.95?E+03 | ??0.380 ??0.162 | ??817 | ??81 |
| ?Comp.6 | ??D | - | - | - | ??1.92?E+04 | ??8.72?E+03 | ??0.419 ??0.201 | ??1499 | ??61.5 |
Claims (31)
1. produce the method for aromatic polycarbonate, the end encapsulant that this method is included under the melting condition the following formula of the free end that is used for the sealing polycarbonate-OH group of capacity joins polycarbonate oligomerization mixture, and this mixture comprises having free end-polycarbonate oligomer of OH group:
Have than polycarbonate with formation in the final response viscosity of the high or low 0.1dl/g at least of viscosity that adds the polycarbonate oligomer that forms before the encapsulant of end, wherein the final end-blocking level of this polycarbonate is than the end-blocking level height about at least 20% of the polycarbonate oligomer that formed before the encapsulant of interpolation end
R wherein
1Be methoxyl group, oxyethyl group, propoxy-, butoxy, phenyl, phenoxy group, benzyl or benzyloxy; And R
2Be C
1-C
30Alkyl, C
1-C
30Alkoxyl group, C
6-C
30Aryl, C
6-C
30Aryloxy, C
7-C
30Aralkyl or C
6-C
30Alkoxy aryl and
Wherein be added at least 80% interpolation after polycarbonate oligomer has reached about 2,500 to 15,000 daltonian number-average molecular weight Mn of the end encapsulant total amount in this mixture.
2. the process of claim 1 wherein R
1Be selected from methoxyl group, propoxy-, benzyloxy and phenoxy group, and R
2Be selected from phenyl, to tert-butyl-phenyl, phenoxy group, to tertiary butyl phenoxy group, to Nonylphenoxy, to dodecyl phenoxy group, 3-(Pentadecane base)-phenoxy group with to the cumyl phenoxy group.
3. the process of claim 1 wherein R
1Be selected from positive propoxy, benzyloxy and phenoxy group.
4. according to the process of claim 1 wherein that the end encapsulant adds in the amount based on about 0.1-6.5 mole of the free end-OH group of the polycarbonate of 1 molar equivalent when adding.
5. according to the method for claim 4, its medial end portions encapsulant adds in the amount based on about 0.4-0.7 mole of the free end-OH group of the polycarbonate of 1 molar equivalent when adding.
6. according to the method for claim 1, further be included in will be selected under the melting condition carbonic acid two-alkylated salicylamide base ester, two (the 2-benzoyl phenyl) esters of carbonic acid, carbonic acid BPA-be two-2-alkoxyl phenyl ester, carbonic acid BPA-be two-2-aryloxy phenylester, carbonic acid BPA-be two-coupling agent of 2-benzoyl phenyl ester and their mixture joins in the polycarbonate.
7. according to the method for claim 1, its medial end portions encapsulant is enough to make polycarbonate, with compare adding the polycarbonate that forms before the encapsulant of end, its limiting viscosity increase amount of the end-blocking level increase about at least 25% of the amount of 0.10dl/g and polycarbonate is at least added.
8. according to the method for claim 7, add at least by the amount of 0.20dl/g and the amount with polycarbonate end-blocking level of about at least 80% with the limiting viscosity increase that enough makes polycarbonate for its medial end portions encapsulant.
9. according to the process of claim 1 wherein that the amount that the end encapsulant reduces the amount of 0.1dl/g at least with the limiting viscosity that enough makes polycarbonate and has a polycarbonate end-blocking level of about at least 80% adds.
10. according to the method for claim 9, its medial end portions encapsulant is enough to make polycarbonate, compare with formed polycarbonate before adding the end encapsulant, its limiting viscosity reduces the amount of amount of the end-blocking level increase about at least 20% of the amount of 0.20dl/g at least and polycarbonate and adds.
11. according to the method for claim 9, its medial end portions encapsulant adds with the mol ratio with respect to about 2-6.5 of the free-OH content of the polycarbonate oligomer when for the first time adding encapsulant.
12. according to the method for claim 9, its medial end portions encapsulant adds with the mol ratio with respect to about 3-6 of the free-OH content of the polycarbonate oligomer when for the first time adding encapsulant.
13. produce the method for aromatic polycarbonate, the end encapsulant that this method is included under the melting condition structural formula (1) joins in the polycarbonate oligomerization mixture, this mixture comprises polycarbonate oligomer:
R wherein
1Be methoxyl group, oxyethyl group, propoxy-, butoxy, phenyl, phenoxy group, benzyl or benzyloxy; And R
2Be C
1-C
30Alkyl, C
1-C
30Alkoxyl group, C
6-C
30Aryl, C
7-C
30Aralkyl or C
6-C
30Aryloxy,
Its medial end portions encapsulant joins in the polycarbonate oligomer with the stoichiometric quantity with respect to about 0.1-6.5 of free OH, its medial end portions encapsulant joins in the polycarbonate oligomer with the stoichiometric quantity with respect to about 0.1-1.5 of the free OH content of polycarbonate oligomer, reached about 2 with at least 80% of its medial end portions encapsulant total amount at polycarbonate, add in the mixture after 500 to 15, the 000 daltonian number-average molecular weight Mn.
14. the method for claim 13, wherein R
1Be selected from methoxyl group, propoxy-, benzyloxy and phenoxy group, and R
2Be selected from phenyl, to tert-butyl-phenyl, phenoxy group, to tertiary butyl phenoxy group, to Nonylphenoxy, to dodecyl phenoxy group, 3-(Pentadecane base)-phenoxy group with to the cumyl phenoxy group.
15. the method for claim 13, wherein R
1Be selected from positive propoxy and phenoxy group.
16. according to the method for claim 13, its medial end portions encapsulant is to add with respect to the amount of about 0.1-6.5 mole of the free OH content of the polycarbonate of formation when adding.
17. according to the method for claim 16, its medial end portions encapsulant adds in the amount of about 0.4-0.7 mole of the terminal hydroxy group of the polycarbonate of formation when adding with respect to 1 molar equivalent.
18. according to the method for claim 13, further be included in will be selected under the melting condition carbonic acid two-alkylated salicylamide base ester, two (the 2-benzoyl phenyl) esters of carbonic acid, carbonic acid BPA-be two-2-alkoxyl phenyl ester, carbonic acid BPA-be two-2-aryloxy phenylester, carbonic acid BPA-be two-coupling agent of 2-benzoyl phenyl ester and their mixture joins in the polycarbonate.
19. the end encapsulant is joined in the polycarbonate in the reactor assembly of continuous or semicontinuous class according to the process of claim 1 wherein.
20. according to the method for claim 19, wherein reactor assembly is made up of placed in-line two or more reactors.
21. according to the method for claim 19, its medial end portions encapsulant uses static mixer to join in the polycarbonate.
22. according to the process of claim 1 wherein that the end encapsulant joins in the polycarbonate with at least a alkaline catalysts.
23. according to the method for claim 22, wherein alkaline catalysts is selected from: alkali metal hydroxide, nitrogenous basic cpd or phosphorous basic cpd, or their mixture.
24. according to the method for claim 22, wherein alkaline catalysts is selected from: sodium hydroxide, tetramethyl ammonium hydroxide and acetate 4-butyl-phosphonium and their mixture.
25. according to the process of claim 1 wherein that the polycarbonate of described formation has at least 80% end-blocking level and at least 25, the molecular weight Mw of 000g/mol.
26. according to the process of claim 1 wherein that formed polycarbonate has the content of the phenol of 500ppm or the replacement of the ortho position that produces below the 500ppm in the capping of end.
27. according to the process of claim 1 wherein that formed polycarbonate has the content of the phenol of 100ppm or the replacement of the ortho position that produces below the 100ppm in the capping of end.
28. according to the process of claim 1 wherein that formed polycarbonate has the content of 500ppm or the unreacted end encapsulant below the 500ppm.
29. according to the process of claim 1 wherein that formed polycarbonate has the content of 100ppm or the unreacted end encapsulant below the 100ppm.
30. according to the process of claim 1 wherein that formed polycarbonate has 2,500ppm or 2, the content of end 2-(alkoxy carbonyl) phenyl that 500ppm is following.
31. according to the process of claim 1 wherein that formed polycarbonate has 1,000ppm or 1, the content of end 2-(alkoxy carbonyl) phenyl that 000ppm is following.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US25870800P | 2000-12-28 | 2000-12-28 | |
| US60/258,708 | 2000-12-28 | ||
| US10/027,138 | 2001-12-21 | ||
| US10/027,138 US20020128425A1 (en) | 2000-12-28 | 2001-12-26 | Process for the production of polycarbonate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1483055A true CN1483055A (en) | 2004-03-17 |
Family
ID=26702113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA018215327A Pending CN1483055A (en) | 2000-12-28 | 2001-12-26 | Method of manufacturing polycarbonates |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20020128425A1 (en) |
| EP (1) | EP1348003B1 (en) |
| JP (1) | JP4112982B2 (en) |
| KR (1) | KR100849252B1 (en) |
| CN (1) | CN1483055A (en) |
| WO (1) | WO2002060977A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4112981B2 (en) * | 2000-12-28 | 2008-07-02 | ゼネラル・エレクトリック・カンパニイ | Method for producing polycarbonate |
| US6590068B2 (en) * | 2001-11-14 | 2003-07-08 | General Electric Company | Reduction of reaction by-products in polycarbonate resins |
| US7671165B2 (en) * | 2008-05-16 | 2010-03-02 | Sabic Innovative Plastics Ip B.V. | Method of forming polycarbonate |
| KR20170089841A (en) * | 2014-11-25 | 2017-08-04 | 사빅 글로벌 테크놀러지스 비.브이. | A method of adding a catalyst in a melt polymerization and the polycarbonate prepared therefrom |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0581074B1 (en) * | 1992-07-27 | 1999-03-10 | Mitsui Chemicals, Inc. | Processes for producing aromatic polycarbonate oligomer and aromatic polycarbonate |
| JP3253029B2 (en) * | 1992-11-19 | 2002-02-04 | 日本ジーイープラスチックス株式会社 | Manufacturing method of aromatic polycarbonate |
| US5696222A (en) * | 1995-09-19 | 1997-12-09 | Teijin Limited | Process for the production of polycarbonate |
| US6410777B1 (en) * | 1997-04-04 | 2002-06-25 | Teijin Limited | Salicylic acid ester derivative and its production |
-
2001
- 2001-12-26 JP JP2002561542A patent/JP4112982B2/en not_active Expired - Fee Related
- 2001-12-26 EP EP01997100A patent/EP1348003B1/en not_active Expired - Lifetime
- 2001-12-26 CN CNA018215327A patent/CN1483055A/en active Pending
- 2001-12-26 KR KR1020037008808A patent/KR100849252B1/en not_active IP Right Cessation
- 2001-12-26 US US10/027,138 patent/US20020128425A1/en not_active Abandoned
- 2001-12-26 WO PCT/US2001/049456 patent/WO2002060977A1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| EP1348003B1 (en) | 2006-03-08 |
| WO2002060977A1 (en) | 2002-08-08 |
| JP4112982B2 (en) | 2008-07-02 |
| EP1348003A1 (en) | 2003-10-01 |
| KR100849252B1 (en) | 2008-07-29 |
| JP2004528403A (en) | 2004-09-16 |
| US20020128425A1 (en) | 2002-09-12 |
| KR20030068200A (en) | 2003-08-19 |
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